Heat-retainer



F. SHRWER.

HEAT RETAINER.

APPLICATION FILE FEB. u. 1919.

Patented May 6, 1919.

INVENTOR WITNESSES ATToRNEY mi Nokms peren: no.. Hom-uma. ulm: mN. nv s.

`flector in the shape FREDERICK SHBIVER, OF GE oneETowiv, lsourirCAROLINA.

HEAT-RETAINER.

Specication of Letters Patent.

a Application filed February 11, 1919. Serial No. 276,304.

To all whom t may concern:

Be it known that I, FREDERICK SHRIVER,

a citizen of the United States, residing at Georgetown, in the countyofGeorgetown and State of South Carolina, haveinvente new and usefulImprovements in Heat-Ra tainers, of which the following is a speci- 1fication.

This invention relates' to fluid fuel burners, or more particularlythose in which the fluid either is gas or is converted into gas at thepoint of its consumption; and the invention has reference to flamedeflectors whereby the heat is reflected or deflected onto the retort soas to conserve the temperature thereof. In burners of this character,and more particularly those used on hand lamps, the mantles becomebroken repeatedly and need constant attention and replacing. It is thepurpose of the present invention to retain the heat by means of a reof ahood or bell standing over the mantle (if one be employed) andpreferably mounted on the bend of the retort, whereby the flame risingfrom the mantle or other burner is to a degree reflected downward andits heat conserved and utilized. The invention consists broadly in thisidea, and specifically in the details for carrying it out, all ashereinafter more fully described and claimed and as shown in thedrawings wherein Figure 1 is a side elevation of a lamp of appropriatetype with this invention applied.

Fig. 2 is a central longitudinal section through the heat retainer orbell. y

Fig. 3 is a perspective detail of the means within the bell for mountingit on the bend of the retort. Y'

The lamp to which my invention applies is typically illustrated hereinas comprising a reservoir or tank T, a retort R rising therefrom andgiven an upward curve so that it is carried thence again downward, and aburner proper which in` this case is a mantle M standing beneath thebend of the retort. Air is usually supplied at A from a bulb or otherdevice connected by a short section of flexible hose to a nipple asshown. I do not wish to be limited in any respect to the type orconstruction of the lamp, further than that its retort shall have theupward bend referred to and that the flame or blaze should be beneathsaid bend, but if a mantle is used as illustrated at M, my heat v sheetmetal hood or .general characteristics kof the -vent the burning Aheatfor purposes which will appear.

A'and is preferably oval excepting that retainer serves also as aprotector for the mantle as experience has proven.

Coming now to the details of the invention itself, the retainer is inthe form of a bell having some of the heat bells formerly employed overgas burners to preof the ceiling, although in the present oase itismounted directly on the retort, is much nearer the burner or flame andmay in fact inclose the upper portion of the mantle, and it is bypreference Patented May 6, 1919.

of metal so that it conserves and retains the This bell, indicatedgenerally by the numeral 1, is composed of outer and inner walls 2 and 3as seen in Fig. 2, slightly spaced from each other, and pierced withopenings or perforations which are staggered with relation to each otherand out of register in vthe two walls.

4These openings l may be of any shape and appropriate size, and theirnumber .and exact disposition are matters of no moment but will dependto an extent upon the character of the lamp and burner. The outer andinner walls may join each other near the lower edge 5 of the burner, butare separated slightly at the upper portions of its side walls and alongthe top. The heat retaining bell is of a size proportionate to thedevice to which it is applied, and provided on its top with aring-shaped handle 6 into which a suitable tool may be inserted when itis to be removed Vor replaced while hot.

The sole support for this bell is a clip lic members secured within thebell by means which permitthe relative adjustment of said members for apurpose to appear. One member has a flatbody 10 longitudinally slottedas at 11 and substantially rectangular. in contour, a pair of dependingspaced fingers 12 at one end, and a tongue 13 depending from the otherend and bent transversely into the shape of a trough of practicallysemi-circular cross-section. The other member is made in the same mannerthe tongue 14 is perhaps a little longer, and otherwise I have given itsparts the same reference numerals. In assembling these members, the bodyof one is laid over the body of the other with the slots in registry,and a screw or bolt 15 lpasses `through the registering slots and iswish to be limited to the engaged with the inner or lower wall of thebell, and when this screw is tightened up or the nut on the bolt istightened up, the parts are held in adjusted position and both parts ormembers are held within the bell. i t this time the tongue on one memberstands between the lingers on the other, and both tongues are deflectedor bent slightly outward whereas the fingers depend practicallyvertically from the plate or members. The adjustment permitted 'by theslots is obviously for the purpose of separating the grooved or curvedtongues a greater or lesser distance, according to the size of the bendlat the top of the retort R, and said tongues are also madesemi-circular for the obvious purpose of causing them to fit or wedgerather tightly on the pipe of which the retort is made. Thus if themembers of this clamp or clasp are made of spring metal, its tongueswill bite on the metal of the bent retort and the entire bell will besupported thereby in the position in which it is placed.

I find that the use of a heat retainer of this character on a lamp ofsubstantially the type illustrated is quite advantageous and effectiveas first above set forth, and the breakage of mantles M is much lessthan with such lamps Where a retainer is not applied. Ordinarily when itis desired to adjust or replace the mantle, the parts become cold orcool during they operation and vaporizatioii is not quickly resumed, andthe result is that the user is compelled to heat the burner when themantle is religlited, unless he can make the substitution or repairsvery quickly. Vith the use of my addition, even when it is necessary toentirely remove it in order to eect a change of parts, this can be doneby inserting a metal element into the ring or handle and lifting it outof place, then the repairs or change can be made, and finally theretainer or bell can be replaced without much loss sult thatvaporization is readily resumed. In many cases where the vdevice is atorch, it is possible to replace the mantle Without removing' the bellat all. In all cases the double walls of the bell, and the fact thatthey are of metal, causes it to retain the heat for a considerable time;and the intimate metallic contact of the clasp with the retainer and thetongues of the clasp with the retort, conducts the heat of the bell intothe retort to a considerable extent. I do not sizes and shapes Copies otthis patent may be obtained for ve cent: each, by addressing the`composed of two members of its heat, with the rev of parts, nor todetails further than set forth in the following claims.

What is claimed as new is 1. The herein described heat retainer forlamps, torches, and the like whose retort has an upward bend above theburner, the same consisting of a bell composed of spaced metallic Wallsprovided with perforatioiis out of registry with each other, and a claspWithin the inner wall for detachable engagement with the bend of saidretort.

y 2. The herein described heat retainer for lamps, torches, and the likewhose retort has an upward 'bend above the burner, the sainecomprising abell of oval shape made up of inner and outer walls in contact with eachother around their lower edges at the mouth of the bell and elsewhereslightly spaced from each other and pierced with non-registeringopenings, means for removably mounting it on the bend, and a ring-shapedhandle at the top of the bell.

3. The combination with a fluid fuel lamp having a retort provided witha bend arched over its burner; of a heat retainer comprising a metallicbell of a size to inclose the upper portion of the retort, and a claspmounted Within said bell adjustably with reference to each other, andeach having a depending curved tongue for engagement with one side oflsaid arch.

4. The combination with a fluid fuel lamp having a retort provided witha bend arched over its burner; of av heat retainer comprising a metallicbell of a size to inclose the upper portion of the retort, a clasp madeup of two complementary members each including a fiat body having alongitudinal slot and a channeled tongue depending from one end of thebody, said bodies being overlapped and their slots in register, and fas--tening'means passing through said slots and taking into the bell.

5. A bell for use on a hot bent pipe coniprising a body of invertedcup-shape, a fastening device within the center of said body, and aclasp in two members each having a flat body engaged by said fasteningdevice, a pair of spaced fingers depending from one end of the body, anda channeled tongue depending from the opposite end of the body betweenthe fingers of the other member and adapted to engage the bend of saidpipe.

In testimony whereof I affix my signature.

FREDERICK SHRIVER.

waghinrten. D- G3'

